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Hex screw bit holder enclosure for 12 bits with rotating clip

by MaksDampf, published

Hex screw bit holder enclosure for 12 bits with rotating clip by MaksDampf Mar 16, 2017
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Design Tools

Rhino

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Thing Statistics

487Views 129Downloads Found in Tool Holders & Boxes

Summary

Bit holder for 12x hex bits.

My problem with other bitholder designs on Thingiverse was that they were either too stiff, or that bits kept falling off. Most commercial designs don't have these problems, but have a complicated full enclosure with live hinges that break too easily.

I fixed these shortcomings by using several design features:

  • seperate 'springy' clamps to hold each bit
  • a rotating clip that secures all bits from falling off, even when this thing is seriously rocked.
  • the hinges are made of two sping-loaded M4 screws

The hexes are fairly stiff when printed in PLA 100micron on my UM2.
Your experience on other printers may vary, so i included the Rhino .3dm file for you to edit and remix as you want.

Print Settings

Printer Brand:

Ultimaker

Printer:

Ultimaker 2

Rafts:

No

Supports:

No

Resolution:

100micron

Infill:

0.1-0.3


Notes:

Prints well in ABS or PLA.

Please do not use a brim! It is very complicated to get that off (accidentally printed it with one).
As the adhesion surface is pretty big, you can probably print it without a raft as well.

Post-Printing

Mount the parts together with spring-loaded screws

I use M4 DIN 7380 half-round head screws with a 2.5mm hex and a length of 10mm.

Use rubber O-rings 3x1.5 or a few spring washers to get the necessary spring load and travel for the clip mechanism.

You don't need to tap the holes. Just use a little force until the screw grips into the plastic and then tighten them.

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